//
//?Created?by?Fabrice?Aneche?on?06/01/14.
//?Copyright?（c）?2014?Dailymotion.?All?rights?reserved.
//

#import?“NSData+ImageContentType.h“


@implementation?NSData?（ImageContentType）

+?（NSString?*）sd_contentTypeForImageData:（NSData?*）data?{
????uint8_t?c;
????[data?getBytes:&c?length:1];
????switch?（c）?{
????????case?0xFF:
????????????return?@“image/jpeg“;
????????case?0x89:
????????????return?@“image/png“;
????????case?0x47:
????????????return?@“image/gif“;
????????case?0x49:
????????case?0x4D:
????????????return?@“image/tiff“;
????????case?0x52:
????????????//?R?as?RIFF?for?WEBP
????????????if?（[data?length]?????????????????return?nil;
????????????}

????????????NSString?*testString?=?[[NSString?alloc]?initWithData:[data?subdataWithRange:NSMakeRange（0?12）]?encoding:NSASCIIStringEncoding];
????????????if?（[testString?hasPrefix:@“RIFF“]?&&?[testString?hasSuffix:@“WEBP“]）?{
????????????????return?@“image/webp“;
????????????}

????????????return?nil;
????}
????return?nil;
}

@end


@implementation?NSData?（ImageContentTypeDeprecated）

+?（NSString?*）contentTypeForImageData:（NSData?*）data?{
????return?[self?sd_contentTypeForImageData:data];
}

@end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-05-10?08:01??JNews-master\
?????目錄???????????0??2017-05-10?08:01??JNews-master\Gif\
?????文件?????3526969??2017-05-10?08:01??JNews-master\Gif\1.gif
?????文件?????1610622??2017-05-10?08:01??JNews-master\Gif\2.gif
?????文件?????3119366??2017-05-10?08:01??JNews-master\Gif\3.gif
?????文件?????1585784??2017-05-10?08:01??JNews-master\Gif\4.gif
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcodeproj\
?????文件???????51683??2017-05-10?08:01??JNews-master\JNews.xcodeproj\project.pbxproj
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcodeproj\project.xcworkspace\
?????文件?????????150??2017-05-10?08:01??JNews-master\JNews.xcodeproj\project.xcworkspace\contents.xcworkspacedata
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcodeproj\project.xcworkspace\xcuserdata\
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcodeproj\project.xcworkspace\xcuserdata\chenkaijie.xcuserdatad\
?????文件???????53651??2017-05-10?08:01??JNews-master\JNews.xcodeproj\project.xcworkspace\xcuserdata\chenkaijie.xcuserdatad\UserInterfaceState.xcuserstate
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcodeproj\xcuserdata\
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcodeproj\xcuserdata\chenkaijie.xcuserdatad\
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcodeproj\xcuserdata\chenkaijie.xcuserdatad\xcdebugger\
?????文件??????????91??2017-05-10?08:01??JNews-master\JNews.xcodeproj\xcuserdata\chenkaijie.xcuserdatad\xcdebugger\Breakpoints_v2.xcbkptlist
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcodeproj\xcuserdata\chenkaijie.xcuserdatad\xcschemes\
?????文件????????4131??2017-05-10?08:01??JNews-master\JNews.xcodeproj\xcuserdata\chenkaijie.xcuserdatad\xcschemes\JNews.xcscheme
?????文件?????????657??2017-05-10?08:01??JNews-master\JNews.xcodeproj\xcuserdata\chenkaijie.xcuserdatad\xcschemes\xcschememanagement.plist
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcworkspace\
?????文件?????????223??2017-05-10?08:01??JNews-master\JNews.xcworkspace\contents.xcworkspacedata
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcworkspace\xcuserdata\
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcworkspace\xcuserdata\chenkaijie.xcuserdatad\
?????文件??????144628??2017-05-10?08:01??JNews-master\JNews.xcworkspace\xcuserdata\chenkaijie.xcuserdatad\UserInterfaceState.xcuserstate
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews.xcworkspace\xcuserdata\chenkaijie.xcuserdatad\xcdebugger\
?????文件??????????91??2017-05-10?08:01??JNews-master\JNews.xcworkspace\xcuserdata\chenkaijie.xcuserdatad\xcdebugger\Breakpoints_v2.xcbkptlist
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews\
?????文件????????2448??2017-05-10?08:01??JNews-master\JNews\AppDelegate.swift
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews\Assets.xcassets\
?????目錄???????????0??2017-05-10?08:01??JNews-master\JNews\Assets.xcassets\AppIcon.appiconset\
............此處省略261個文件信息